30° beam angle SMD LEDs emit light further for high-intensity applications
Applications for visible wavelengths include signalling and indication, in which the beam needs to be visible over greater distances, while the company’s infrared wavelength versions are used for sensing and data-communication over greater distances and with higher precision than using standard, wide-angle SMD components.
Traditional through-hole (non-surface-mount) LEDs are commonly produced with narrow output angles as the LED body is generally moulded around the leadframe using an optical epoxy or silicone. The LED body itself then acts as the lens, focusing the light into beam angles as narrow as 5 degrees, with 30 degrees being a common requirement for many indication and sensing applications. However, with the move to surface-mount components, some design versatility was lost as the LED body is generally injection moulded from non-optical material which is pre-manufactured before the LED die is mounted, and does not therefore form a lens in the same way. As a result, the majority of SMD packages do not incorporate any lensing, emitting light in a wide beam angle which generally exceeds 100°.
Using a proprietary post die-mount encapsulation process, OMC is able to cost-effectively integrate narrow angle lensing into a range of surface-mount emitters, and can now offer 30 degree beam angles for all standard LED wavelengths, including infrared.
OMC – www.omc-uk.com
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